Black Box TV Converter Box 10 100 Autosensing Media Converter User Manual

10/100 Autosensing  
Media Converter  
Installation Guide  
LMC7001A-R4 – LMC7002A-R4 – LMC7003A-R4 – LMC7004A-R4 – LMC7005A – LMC7006A  
10/100 Autosensing Media Converteris a low-cost, standalone, IEEE  
802.3 single-conversion media converter which converts between:  
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10Base-T twisted pair and 10Base-FL single or multi-mode fiber;  
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100Base-TX twisted pair and 100Base-SX multi-mode fiber  
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100Base-TX twisted pair and 100Base-FX single-mode fiber  
10/100 Autosensing Media Converter is a 1U high, table-top unit that  
includes diagnostic LEDs, an internal, universal (100/240 VAC) power  
supply, one RJ-45 connector for the twisted pair port and one pair of ST  
(LMC7001A-R4 for 850 nm multi-mode, LMC7005A for 1300 nm multi-  
mode, and LMC7003A-R4 for 1310 nm single mode) or SC (LMC7002A-R4  
for 850 nm multi-mode, LMC7006A for 1300 nm multi-mode, and  
LMC7004A-R4 for 1310 nm single-mode) connectors for the fiber port.  
Installing 10/100 Autosensing Media Converter  
10/100 Autosensing Media Converter comes ready to install. The only  
adjustments that may need to be made after installation are:  
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Configuring the unit for its mode of operation and other features.  
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Setting the twisted pair port for a crossover workstation or pass-  
through connection.  
To install the 10/100 Autosensing Media Converter, first make sure that the  
unit is placed on a suitable flat surface, leaving some space behind the unit.  
Attach the cables between the 10/100 Autosensing Media Converter and each  
device that will be interconnected, then plug the unit into a reliable, filtered  
power source.  
NOTE: All network cables must be connected for link LEDs to glow.  
The following diagram shows the faceplate on the 10/100 Autosensing  
Media Converter. Regardless of the type of fiber connectors, the LEDs  
operate the same. Refer to page 5 for LED functionality.  
1000 Park Drive • Lawrence, PA 15055-1018 USA  
TEL: (724) 746-5500 • FAX: 724-746-0746  
[email protected] • www.blackbox.com  
Twisted Pair  
Crossover/  
LEDs  
SX  
LEDs  
pass-through  
switch  
Fiber Optic  
port  
© 2000-2005 Black Box Corp. All rights reserved.  
XMT  
RCV  
SX  
TX  
100  
LNK  
ACT  
The information in this document is subject to change without notice. Black Box assumes no responsibility for any errors that may appear  
in this document. All product names are trademarks of the manufacturer. Specific brands and product names may be trademarks and are  
the property of their respective companies.  
100  
X
II  
ACT  
LNK  
PWR  
Document Number 55-80216BB-01 B6  
January 2005  
10/100 Mbps  
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If using a high powered device (which is designed for long distance  
installations) for a short distance installation, the fiber transmitters may  
overdrive the receivers and cause data loss. If this is the case, you may  
need to add an optical attenuator to your connection.  
• In Force 100 mode, the media converter converts 100Base-TX to  
100Base-SX multi-mode or 100Base-FX single-mode fiber; 10 Mbps  
signals are not accepted.  
There is no auto-negotiation in Force-100 mode.  
Please contact Black Box for more information.  
To enable Force-100 mode, set switch S7 to the ON position, with  
switches S6 and S8 in the OFF position.  
Black Box Customer Service  
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)  
FREE technical support, 24 hours a day, 7 days a week:  
AU T O -NE G O T I A T I O N O N Y O U R ME D I A CO N V E R T E R  
When connecting two 10/100 Autosensing Media Converters between two  
end stations (devices such as switches, hubs and repeaters), all devices in the  
media conversion should ideally support, and be utilizing, Auto-Negotiation  
functionality. While it is possible to have auto-negotiating devices on one side  
of the media conversion and fixed (non-auto-negotiating) devices on the other,  
link LEDs will react differently depending on where a link fault occurs.  
Therefore, Black Box recommends:  
Call: 724-746-5500  
Fax: 724-746-0746  
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
Web site: www.blackbox.cox  
SP E C I F I C A T I O N S  
Environmental  
A) Configuring every device in the media conversion for Auto-Negotiation.  
Operating Temperature: 32° - 122° F (0° - 50° C)  
Storage Temperature: 20° - 160° F (-20° - 70° C)  
Humidity: 5 - 95% (non-condensing)  
For installations where Auto-Negotiation is NOT possible from one end of  
the media conversion to the other:  
B) Manually configure all devices for 10 Mbps or 100 Mbps connections.  
Power  
AC Input Load: 100/240 10% VAC  
100 10% VAC ~ 50-60 Hz, 0.1A  
240 10% VAC ~ 50-60 Hz, 0.05A  
TR O U B L E S H O O T I N G FE A T U R E S  
10/100 Autosensing Media Converter include two advanced troubleshooting  
features, Transparency and Link Fault Detection (LFD), to help you locate “silent  
failures” on your network.  
FI B E R OP T I C CL E A N I N G GU I D E L I N E S  
Fiber optic transmitters and receivers are extremely susceptible to contamination by  
particles of dirt or dust which can obstruct the optic path and cause performance  
degradation. Good system performance requires clean optics and connector ferrules.  
1) Use fiber patch cords (or connectors, if you terminate your own fiber) only  
from a reputable supplier; low-quality components can cause many hard-to-  
diagnose problems in an installation.  
2) Dust caps are installed by the manufacturer to ensure factory-clean optical  
devices. These protective caps should not be removed until the moment of  
connecting the fiber cable to the device. Assure that the fiber is properly  
terminated, polished and free of any dust or dirt and that the location is as free  
from dust and dirt as possible.  
TR A N S P A R E N C Y FE A T U R E  
Transparency is only available when using Auto-Negotiation mode; it is not  
available in either of the two Force modes. When the 10/100 Autosensing  
Media Converter is auto-negotiating, Transparency treats the connection  
between the two end devices as if there were no media converters installed.  
For example, in a typical application where two media converters are installed  
between two copper-based switches, the twisted pair cables as well as the  
fiber cable are seen as “one” entity. Therefore, if a fault occurs on any  
segment between the two end devices, link LEDs on the end devices will go  
out.  
WARNING! Integrated circuits and fiber optic components are extremely  
susceptible to electro-static discharge damage. Do not handle these  
components directly unless you are a qualified service technician and use tools  
and techniques that conform to accepted industry practices.  
As stated, Transparency is available when the 10/100 Autosensing Media  
Converter is operating in Auto-Negotiation mode, therefore S6 (AN/PNP) must  
be ON and S5 (LFD), S7 (Force) and S8 (10/100) must be OFF.  
3) Store spare caps in a dust-free environment such as a sealed plastic bag or box  
so that when reinstalled they do not introduce any contamination to the optics.  
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FI B E R PO R T  
LI N K FA U L T DE T E C T I O N FE A T U R E  
100  
Glows yellow when 100 Mbps data is detected on the port.  
Link Fault Detection is only available when using Force-10 or Force-100  
mode; it is not available in Auto-Negotiation mode. When LFD is enabled and  
the input link is down at one interface to the 10/100 Autosensing Media  
Converter, the transmitter output on that interface is turned off for about  
425ms every 3.8 seconds (i.e. blinking). It applies to both network interfaces  
and to both data rates. If the link at the other interface to the 10/100  
Autosensing Media Converter is also down, there is no output. LFD causes the  
Link Up indicator of the link partner to blink.  
ACT  
Glows green when data is detected on the port.  
LNK  
Glows green when a fiber link is established.  
NOTE  
Twisted pair AND fiber optic cables must be connected, and the twisted pair crossover/  
pass-through switch set correctly, before either LNK LED will glow solid.  
LI N K FA U L T DE T E C T I O N LED AC T I V I T Y  
When the 10/100 Autosensing Media Converter is in one of the Force  
modes, enable LFD by setting S5 to the ON position. Disable LFD (default) by  
setting S5 to the OFF position. In order for LFD to function properly, Force  
mode must be enabled by setting S7 to ON with either S8 ON for 10 Mbps or  
S8 OFF for 100 Mbps. NOTE: S6 must also be ON when enabling LFD.  
When LFD is enabled and a fault occurs on a segment of the media  
conversion, the various Link LEDs in that conversion will either blink or  
extinguish. LEDs may react differently depending on the type of end devices  
in the conversion, whether the 10/100 Autosensing Media Converter is in  
Force-10 or Force-100 mode, where the fault occurs, etc. For questions,  
please contact Technical support.  
NOTE  
When using the LFD feature, if the DIP switches are in any other combination than  
listed above, your 10/100 media converter may exhibit erratic behavior.  
Installation Troubleshooting  
During installation, first test the fiber and twisted pair connections with all  
troubleshooting features disabled, then enable these features, if desired, just  
before final installation. This will reduce the features’ interference with  
testing.  
When working with units where the features cannot be disabled, you must  
establish BOTH your twisted pair and fiber connections before the link LEDs  
will light!  
TW I S T E D PA I R CR O S S O V E R /PA S S -TH R O U G H SW I T C H  
The 10/100 Autosensing Media Converter features a crossover/pass-through  
push-button switch, located on the faceplate next to the RJ-45 connector, to  
set the twisted pair connection type (see page 1 for illustration of location).  
Select a pass-through connection by pressing the push-button IN. A cross-  
over connection is selected when the push-button is OUT. If you are not sure  
which connection is needed, set the push-button to whatever setting makes  
the twisted pair LNK (link) LED glow.  
To test a media converter by itself, first make sure you have an appropriate  
fiber patch cable, then follow these steps to test:  
Step 1: Connect the media converter to the twisted pair  
device with a twisted pair cable.  
LED Indicators  
Step 2: Loop a single strand of fiber from the transmit port to  
the receive port of your media converter.  
Step 3: Verify that you have both twisted pair and fiber link (see  
LED Operation section, page 4)) on your media converter.  
NOTE: Use caution when conducting a loopback test; it is possible to  
create a network loop if connecting the media converter’s twsited pair port  
to an active network. IMC Networks recommends connecting the twisted  
pair cable to a PC when performing this type of test.  
The 10/100 Autosensing Media Converter features several diagnostic LEDs  
per port. The LED functions for the media converter are:  
TW I S T E D PA I R PO R T  
LNK  
ACT  
100  
LFD  
Glows green when a twisted pair link is established.  
Glows yellow when data is detected on the port.  
Glows yellow when 100 Mbps data is detected on the port.  
Glows green when Link Fault Detection is enabled.  
Make sure to use the appropriate twisted pair cable, and have the  
crossover/pass-through switch set correctly if your media converters do not  
include AutoCross.  
(NOTE: This feature is only available when either Force -10 or Force-100 mode is  
enabled. Refer to the LFD LED Activity section for more information.)  
AN  
PWR  
Glows green when Auto-Negotiation/PNP mode is enabled.  
Glows green when unit has power.  
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